F-Secure Oyj - Changes in company's own shares

SHARE REPURCHASE 21.12.2010

F-Secure Corporation       ANNOUNCEMENT         21.12.2010
SHARE REPURCHASE 21.12.2010                               
In the Helsinki Stock Exchange                            
Trade date                        21.12.2010              
Bourse trade               BUY                            
Share                      FSC1V                          
Amount                                20.000  shares      
Total cost                         40.790,00  EUR         
Average price/ share                  2,0395  EUR         
Highest price/ share                    2,05  EUR         
Lowest price/ share                     2,03  EUR         
F-Secure Corporation now holds a total of 3.287.313 shares
including the shares repurchased on 21.12.2010.           
On behalf of F-Secure Corporation                         
Nordea Bank Finland Plc                                   
Petri Simberg              Julius Summanen